The Perkins 1104D is a 4.4 L 4-cylinder turbocharged engine rated at 1800 rpm, producing up to 1104 kW. It powers generator sets from Perkins, including the 1104D-44T IOPU. It holds 8.4 L (2.2 gal) of oil and 1104 L (291.6 gal) of coolant.
Also known as: Perkins 1104D
Part of the Perkins 1104D engine family — 16 variants share parts & fitment.
The cheapest captured merchant offer per filter — see the full cross-reference below for every OEM/aftermarket option.
Prices captured from merchant listings; some links are affiliate links. Verify against your serial number before ordering.
| Oil capacity | 8.4 L |
|---|---|
| Coolant capacity | 1104.0 L |
| Displacement | 4.399 L |
| Cylinders | 4 |
| Aspiration | turbocharged |
| Rated speed | 1800 rpm |
| Gross power | 1104 kW |
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | 2 stage cyclonic/paper element | WA11994 | Amazon eBay $114.47 | ||
| Fuel filter | — | ||||
| Oil filter | — | ||||
| Battery | — | ||||
| Belt | — | ||||
| Coolant | — | ||||
| Coolant filter | — | ||||
| Oil | — | ||||
| Spark plug | — |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
Step-by-step procedures compiled from the Perkins service manual for this engine.
| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Other | Compression Ratio | 16.2:1 | ||
| Speed | Operating range | 750 to 2650 | rpm | |
| Valve clearance | Valve Lash Setting (Exhaust) | 0.35 | mm | |
| Valve clearance | Valve Lash Setting (Inlet) | 0.35 | mm |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
⚠ Do not ground the welder to electrical components such as the ECM or sensors. Improper grounding can cause damage to the drive train bearings, hydraulic components, electrical components, and other components.
Tools: Welder, Ground clamp
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Part # | Description | Category |
|---|---|---|
| 125562 | Air Filter - Secondary | Air filter |
| LLB1114B | Leroy Somer | Alternator |
| LLB1114D | Leroy Somer | Alternator |
| LLB1114F | Leroy Somer | Alternator |
| LLB1114L | Leroy Somer | Alternator |
| LLB1114M | Leroy Somer | Alternator |
| LLB1514J | Leroy Somer | Alternator |
| LLB1514P | Leroy Somer | Alternator |
| LLB3114D | Leroy Somer | Alternator |
| LLB3114H | Leroy Somer | Alternator |
| 125552 | Belt | Belt |
| P532 | Fuel Injection Pump Solenoid Connector (2 Pin Connector) | Connector |
| P691/J691 | Electronic Unit Injectors for No. 1 and No. 2 Cylinders (4 Pin Connector) | Injector |
| P692/J692 | Electronic Unit Injectors for No. 3 and No. 4 Cylinders (4 Pin Connector) | Injector |
| 101-4000 | Gasket | Service part / kit |
| 127-0826 | Battery | Service part / kit |
| 134277 | T70, T90 & T120 Super Quiet Generator Maintenance Schedule | Service part / kit |
| 153-5720 | Battery | Service part / kit |
| 250-0486 | Oil Filter | Service part / kit |
| 250-0488 | Spark Plug | Service part / kit |
| 8C-3600 | Battery | Service part / kit |
| 8C-3601 | Battery | Service part / kit |
| 8C-3620 | Belt | Service part / kit |
| 8C-3627 | Fuel Filter | Service part / kit |
| P100 | Coolant Temperature Sensor (2 Pin Connector) | Sensor |
| P103 | Intake Manifold Temperature Sensor (2 Pin Connector) | Sensor |
| P200 | Intake Manifold Pressure Sensor (3 Pin Connector) | Sensor |
| P201 | Engine Oil Pressure Sensor (3 Pin Connector) | Sensor |
| P228 | Fuel Pressure Sensor (3 Pin Connector) | Sensor |
| P401 | Primary Speed/Timing Sensor (2 Pin Connector) | Sensor |
| P402 | Secondary Speed/Timing Sensor (2 Pin Connector) | Sensor |
| 4133L066 | PERKINS 1104D-E44T, 1104D-E44TA, 1106D-E66TA THERMOSTAT | Thermostat |
| P601 | Wastegate Valve (if equipped) (2 Pin Connector) | Wastegate valve |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
Parts listed by aftermarket suppliers as fitting this engine — leads compiled from supplier catalogs; verify the exact part for your serial number.
Cross-referenced via Donaldson + OEM/engine-maker interchange — options to verify against your serial number, not confirmed for every exact variant.
Other equipment known to use this engine, via filter-application cross-reference — useful for sourcing parts even when your exact machine isn't listed elsewhere on this page.
The Perkins 1104D engine has an oil capacity of 8.4 liters.
The Perkins 1104D has a displacement of 4.399 liters with 4 cylinders.
The Perkins 1104D powers 1 generator set(s), including Perkins 1104D-44T IOPU.
The Perkins 1104D uses air filter part numbers Donaldson P635903, Donaldson P635979, Wix WA11994.